Danfoss CRCT230HC1, CRCT230HC3 Data sheet
Datasheet
CRCT230HC1 and CRCT230HC3
Heat/Cool Room Thermostats
Features
The CRCT230HC range is designed for use in 4-pipe
fan-coil unit systems, split packaged systems and
in air to air heat-pump systems. The thermostat
design utilizes a microprocessor that in addition to
providing an intuitive analogue setting interface
with LCD display, also provides many enhanced
features adding to the fl exibility and versatility of
the product.
The thermostat incorporates a simple analogue
setting dial scaled 1 to 5, plus a small LCD display
which normally displays actual room temperature,
but changes momentarily to show set temperature
when the setting dial is moved. The set temperature
displayed on the LCD is the heating set point; an
installer selectable dead-band setting of either 2°C
or 4°C made during commissioning ensures that
there is no overlap between the separate heating
and cooling outputs.
In addition to the heating and cooling outputs,
the thermostat also incorporates a fan relay to
control the operation of a single phase fan motor.
A manual switch on the right hand face of the
3 speed versions of the thermostat allows the
user to manually select the required fan speed.
An additional manual switch on the left hand
face of the product allows the user to turn off
the thermostat and to select whether the fan is
switched on and off with the heating and cooling
outputs or runs continuously. LED indicators
provide clear indication of output status.
In addition to providing conventional on/off control,
the thermostat can be set up at time of installation to
provide chrono-proportional output of the heating
stage. If selected, the installer can determine the
cycle rate that the thermostat will impose on the
system using DIL switches on the rear of the unit.
This type of control mode provides closer control
accuracy compared to on/off control.
If used in air to air heat pump systems, the
thermostat can be set up at time of installation for
this type of system. This reconfi gures the heat &
cool outputs, allocating one to the control of the
compressor and one for the control of the reversing
valve which in turn dictates if the heat-pump
delivers hot or cold air. A built-in compressor delay
timer can be activated to prevent compressor
short cycling, the duration of the delay period can
also be set at time of installation. This compressor
delay timer function is also available for use in
non-heat-pump systems where cooling is derived
from a compressor.
For applications requiring remote air temperature
sensing, versions CRCT230HC1A and CRCT230
HC3A are also available.
• Simple analogue setting interface
• Suitable for 4-pipe fan coil unit systems
• Suitable for simple heat-pump systems
• Advanced microprocessor based design
Applications
Part No. 748v01 08/08
Fan-coil Control
+
-
-/+
R/V
-/+
Heat Pump Control
1
Datasheet CRCT230 HC-1/HC-3 Heat/Cool Room Thermostats
Specifi cation
Features 1-Speed Fan Model 3-Speed Fan Model
Built-in Sensor - Code no. CRCT230 HC1 - 082F1510 CRCT230 HC-3 - 082F1507
Remote Sensor - Code no. CRCT230 HC1A - 082F1511 CRCT230 HC3A - 082F1508
Manual 3-Speed Fan Switch •
Temperature range, heating 5 -30°C
Temperature range, cooling 7-32°C at dead-band of 2K
Temperature range, cooling 9-34°C at dead-band of 4K
Selectable dead-band 2 or 4K
Thermal diff erential /stage in on/off mode <1°C
Temperature accuracy ±1°C
Thermostat off /auto & fan on selector •
LCD display of set/room temperature •
Heat/cool output status LED •
Power on/ fan output status LED •
On/off or Chrono-proportional control •
Optional compressor delay timer •
Fan-coil or heat-pump confi guration •
Reversing valve heat or cool selection 1) •
Selectable Celsius or Fahrenheit scaling •
Maximum ambient temperature 45°C
Power supply 230Vac, ±10%, 50/60Hz
Relay outputs, heat, cool & fan 3 x SPST, 3(1)A, 10-230Vac
Dimensions, mm 110 wide, 90 high, 40 deep
Design standard EN60730-2-9
1) Reversing valve function only available if set up for heat-pump operation
Installer Settings
On/Off
°C
No Comp Del
3 Minutes
DB 2°C/4°F
Fan Coil Heat Pump
ON
RV-
Wiring
Chrono
Chrono 3Chrono 6
°F
Comp Del
4 Minutes
DB 4°C/8°F
RV+
Switch 8: If set to On/Off , both heating and cooling
stages operate in on/off mode. If set to Chrono,
heating stage operates in chrono-proportional
modes, cooling continues in On/off mode.
Switch 7: Active only is switch 8 is set to Chrono.
This switch determines the number of cycles
per hour that the thermostat will impose on the
system, the options are three 20 minute cycles or
six 10 minute cycles.
Switch 6: Allows Celsius or Fahrenheit temperature
scaling to be selected.
Switch 5: Enables or disables a compressor delay
timer which is activated at the end of each cooling
call. This feature need only be used where cooling
is provided by a compressor as opposed to chilled
water. Set to Cmp del if a compressor delay is
required, otherwise leave set to No Cmp del.
Switch 4: Active only if switch 5 is set to Cmp del.
The options are 3 or 4 minutes.
ELECTRONICS
Switch 3: Allows dead-band between heating and
cooling to be set, options are 2°C or 4°C.
Switch 2: Allows application to set as fan coil or as
heat pump. If heat-pump is selected, the output
normally used to operate the heating valve is reassigned to the heat-pump reversing valve, the
compressor stop/start signal for both heat and
cool calls is re-assigned to the relay normally used
to operate the cooling valve.
Switch 1: The function of this switch is dependant
upon the setting of switch 2:
Switch 2 set to Fan-coil: Set to TS2, if the
thermostat has a remote sensor, the sensor is
treated as a room sensor.
Switch 2 set to Heat-pump: allows the reversing
valve to be set up to be energised in heating
mode (R+), or energised in cooling mode (R-).
ELECTRONICS
FAN 2FAN 1
3 SPEED
FAN
N
FAN 3
X SEN
X SEN
REMOTE
SENSOR
('A' MODELS ONLY)
N
230 VAC
FIXED 3A
COOL/
COM
COMP.
HEAT/
RV
COMPRESSOR
REVERSING VALVE
COMMON (LIVE IN)
L
FAN
1
FAN
2
3 SPEED
FAN
N
FAN
3
Notes
X SEN
X SEN
REMOTE
SENSOR
('A' MODELS ONLY)
N
N
230 VAC
FIXED 3A
HEAT/
COOL/C
L
L
OMP.
COM
RV
HEATING OUTPUT
COOLING OUTPUT
COMMON IN (LIVE IN)
(1) If HEAT/COOL/FAN outputs are 230V, link terminals L-COM.
(2) HC-1 and HC-1A models do not have a fan speed selector switch, fan is connected to terminal fan 1.
2
Part No. 748v01 08/08
Loading...